/**
 * 农历及与公里的转换根据js库（https://github.com/jjonline/calendar.js），转译为ts(2019-10-23)
 * @1900-2100区间内的公历、农历互转
 * @charset UTF-8
 * @Author  Jea杨(JJonline@JJonline.Cn)
 * @Time    2014-7-21
 * @Time    2016-8-13 Fixed 2033hex、Attribution Annals
 * @Time    2016-9-25 Fixed lunar LeapMonth Param Bug
 * @Time    2017-7-24 Fixed use getTerm Func Param Error.use solar year,NOT lunar year
 * @Version 1.0.3
 * @公历转农历：Calendar.solar2lunar(1987,11,01); //[you can ignore params of prefix 0]
 * @农历转公历：Calendar.lunar2solar(1987,09,10); //[you can ignore params of prefix 0]
 */

const lunarInfo = [];
const solarTerm = [];
const sTermInfo = [];

/**
 * 农历1900-2100的润大小信息表
 */
function getLunarInfo() {
    if (0 === lunarInfo.length) {
        lunarInfo.push(
            0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2,//1900-1909
            0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977,//1910-1919
            0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970,//1920-1929
            0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950,//1930-1939
            0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557,//1940-1949
            0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5b0, 0x14573, 0x052b0, 0x0a9a8, 0x0e950, 0x06aa0,//1950-1959
            0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0,//1960-1969
            0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b6a0, 0x195a6,//1970-1979
            0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570,//1980-1989
            0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x05ac0, 0x0ab60, 0x096d5, 0x092e0,//1990-1999
            0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5,//2000-2009
            0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930,//2010-2019
            0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530,//2020-2029
            0x05aa0, 0x076a3, 0x096d0, 0x04afb, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45,//2030-2039
            0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0,//2040-2049
            /**Add By JJonline@JJonline.Cn**/
            0x14b63, 0x09370, 0x049f8, 0x04970, 0x064b0, 0x168a6, 0x0ea50, 0x06b20, 0x1a6c4, 0x0aae0,//2050-2059
            0x0a2e0, 0x0d2e3, 0x0c960, 0x0d557, 0x0d4a0, 0x0da50, 0x05d55, 0x056a0, 0x0a6d0, 0x055d4,//2060-2069
            0x052d0, 0x0a9b8, 0x0a950, 0x0b4a0, 0x0b6a6, 0x0ad50, 0x055a0, 0x0aba4, 0x0a5b0, 0x052b0,//2070-2079
            0x0b273, 0x06930, 0x07337, 0x06aa0, 0x0ad50, 0x14b55, 0x04b60, 0x0a570, 0x054e4, 0x0d160,//2080-2089
            0x0e968, 0x0d520, 0x0daa0, 0x16aa6, 0x056d0, 0x04ae0, 0x0a9d4, 0x0a2d0, 0x0d150, 0x0f252,//2090-2099
            0x0d520, // 2100
        );
    }
    return lunarInfo;
}

/**
 * 公历每个月份的天数普通表
 */
const solarMonth = [
    31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31,
];

/**
 * 天干地支之天干速查表
 * ["甲","乙","丙","丁","戊","己","庚","辛","壬","癸"]
 */
const Gan = [
    "\u7532", "\u4e59", "\u4e19", "\u4e01",
    "\u620a", "\u5df1", "\u5e9a", "\u8f9b",
    "\u58ec", "\u7678",
];

/**
 * 天干地支之地支速查表
 * ["子","丑","寅","卯","辰","巳","午","未","申","酉","戌","亥"]
 */
const Zhi = [
    "\u5b50", "\u4e11", "\u5bc5", "\u536f",
    "\u8fb0", "\u5df3", "\u5348", "\u672a",
    "\u7533", "\u9149", "\u620c", "\u4ea5",
];

/**
 * 天干地支之地支速查表<=>生肖
 * ["鼠","牛","虎","兔","龙","蛇","马","羊","猴","鸡","狗","猪"]
 */
const Animals = [
    "\u9f20", "\u725b", "\u864e", "\u5154",
    "\u9f99", "\u86c7", "\u9a6c", "\u7f8a",
    "\u7334", "\u9e21", "\u72d7", "\u732a",
];

/**
 * 24节气速查表
 * ["小寒","大寒","立春","雨水","惊蛰","春分","清明","谷雨","立夏","小满","芒种","夏至","小暑","大暑","立秋","处暑","白露","秋分","寒露","霜降","立冬","小雪","大雪","冬至"]
 */
function getSolarTerm() {
    if (0 === solarTerm.length) {
        solarTerm.push(
            "\u5c0f\u5bd2", "\u5927\u5bd2", "\u7acb\u6625", "\u96e8\u6c34",
            "\u60ca\u86f0", "\u6625\u5206", "\u6e05\u660e", "\u8c37\u96e8",
            "\u7acb\u590f", "\u5c0f\u6ee1", "\u8292\u79cd", "\u590f\u81f3",
            "\u5c0f\u6691", "\u5927\u6691", "\u7acb\u79cb", "\u5904\u6691",
            "\u767d\u9732", "\u79cb\u5206", "\u5bd2\u9732", "\u971c\u964d",
            "\u7acb\u51ac", "\u5c0f\u96ea", "\u5927\u96ea", "\u51ac\u81f3",
        );
    }
    return solarTerm;
}

/**
 * 1900-2100各年的24节气日期速查表
 */
function getSTermInfo() {
    if (0 === sTermInfo.length) {
        sTermInfo.push(
            '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e', '97bcf97c3598082c95f8c965cc920f',
            '97bd0b06bdb0722c965ce1cfcc920f', 'b027097bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e',
            '97bcf97c359801ec95f8c965cc920f', '97bd0b06bdb0722c965ce1cfcc920f', 'b027097bd097c36b0b6fc9274c91aa',
            '97b6b97bd19801ec9210c965cc920e', '97bcf97c359801ec95f8c965cc920f', '97bd0b06bdb0722c965ce1cfcc920f',
            'b027097bd097c36b0b6fc9274c91aa', '9778397bd19801ec9210c965cc920e', '97b6b97bd19801ec95f8c965cc920f',
            '97bd09801d98082c95f8e1cfcc920f', '97bd097bd097c36b0b6fc9210c8dc2', '9778397bd197c36c9210c9274c91aa',
            '97b6b97bd19801ec95f8c965cc920e', '97bd09801d98082c95f8e1cfcc920f', '97bd097bd097c36b0b6fc9210c8dc2',
            '9778397bd097c36c9210c9274c91aa', '97b6b97bd19801ec95f8c965cc920e', '97bcf97c3598082c95f8e1cfcc920f',
            '97bd097bd097c36b0b6fc9210c8dc2', '9778397bd097c36c9210c9274c91aa', '97b6b97bd19801ec9210c965cc920e',
            '97bcf97c3598082c95f8c965cc920f', '97bd097bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
            '97b6b97bd19801ec9210c965cc920e', '97bcf97c3598082c95f8c965cc920f', '97bd097bd097c35b0b6fc920fb0722',
            '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e', '97bcf97c359801ec95f8c965cc920f',
            '97bd097bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e',
            '97bcf97c359801ec95f8c965cc920f', '97bd097bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
            '97b6b97bd19801ec9210c965cc920e', '97bcf97c359801ec95f8c965cc920f', '97bd097bd07f595b0b6fc920fb0722',
            '9778397bd097c36b0b6fc9210c8dc2', '9778397bd19801ec9210c9274c920e', '97b6b97bd19801ec95f8c965cc920f',
            '97bd07f5307f595b0b0bc920fb0722', '7f0e397bd097c36b0b6fc9210c8dc2', '9778397bd097c36c9210c9274c920e',
            '97b6b97bd19801ec95f8c965cc920f', '97bd07f5307f595b0b0bc920fb0722', '7f0e397bd097c36b0b6fc9210c8dc2',
            '9778397bd097c36c9210c9274c91aa', '97b6b97bd19801ec9210c965cc920e', '97bd07f1487f595b0b0bc920fb0722',
            '7f0e397bd097c36b0b6fc9210c8dc2', '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e',
            '97bcf7f1487f595b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
            '97b6b97bd19801ec9210c965cc920e', '97bcf7f1487f595b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722',
            '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e', '97bcf7f1487f531b0b0bb0b6fb0722',
            '7f0e397bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa', '97b6b97bd19801ec9210c965cc920e',
            '97bcf7f1487f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
            '97b6b97bd19801ec9210c9274c920e', '97bcf7f0e47f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b0bc920fb0722',
            '9778397bd097c36b0b6fc9210c91aa', '97b6b97bd197c36c9210c9274c920e', '97bcf7f0e47f531b0b0bb0b6fb0722',
            '7f0e397bd07f595b0b0bc920fb0722', '9778397bd097c36b0b6fc9210c8dc2', '9778397bd097c36c9210c9274c920e',
            '97b6b7f0e47f531b0723b0b6fb0722', '7f0e37f5307f595b0b0bc920fb0722', '7f0e397bd097c36b0b6fc9210c8dc2',
            '9778397bd097c36b0b70c9274c91aa', '97b6b7f0e47f531b0723b0b6fb0721', '7f0e37f1487f595b0b0bb0b6fb0722',
            '7f0e397bd097c35b0b6fc9210c8dc2', '9778397bd097c36b0b6fc9274c91aa', '97b6b7f0e47f531b0723b0b6fb0721',
            '7f0e27f1487f595b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
            '97b6b7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722',
            '9778397bd097c36b0b6fc9274c91aa', '97b6b7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722',
            '7f0e397bd097c35b0b6fc920fb0722', '9778397bd097c36b0b6fc9274c91aa', '97b6b7f0e47f531b0723b0b6fb0721',
            '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b0bc920fb0722', '9778397bd097c36b0b6fc9274c91aa',
            '97b6b7f0e47f531b0723b0787b0721', '7f0e27f0e47f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b0bc920fb0722',
            '9778397bd097c36b0b6fc9210c91aa', '97b6b7f0e47f149b0723b0787b0721', '7f0e27f0e47f531b0723b0b6fb0722',
            '7f0e397bd07f595b0b0bc920fb0722', '9778397bd097c36b0b6fc9210c8dc2', '977837f0e37f149b0723b0787b0721',
            '7f07e7f0e47f531b0723b0b6fb0722', '7f0e37f5307f595b0b0bc920fb0722', '7f0e397bd097c35b0b6fc9210c8dc2',
            '977837f0e37f14998082b0787b0721', '7f07e7f0e47f531b0723b0b6fb0721', '7f0e37f1487f595b0b0bb0b6fb0722',
            '7f0e397bd097c35b0b6fc9210c8dc2', '977837f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721',
            '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722', '977837f0e37f14998082b0787b06bd',
            '7f07e7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e397bd097c35b0b6fc920fb0722',
            '977837f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722',
            '7f0e397bd07f595b0b0bc920fb0722', '977837f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721',
            '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b0bc920fb0722', '977837f0e37f14998082b0787b06bd',
            '7f07e7f0e47f149b0723b0787b0721', '7f0e27f0e47f531b0b0bb0b6fb0722', '7f0e397bd07f595b0b0bc920fb0722',
            '977837f0e37f14998082b0723b06bd', '7f07e7f0e37f149b0723b0787b0721', '7f0e27f0e47f531b0723b0b6fb0722',
            '7f0e397bd07f595b0b0bc920fb0722', '977837f0e37f14898082b0723b02d5', '7ec967f0e37f14998082b0787b0721',
            '7f07e7f0e47f531b0723b0b6fb0722', '7f0e37f1487f595b0b0bb0b6fb0722', '7f0e37f0e37f14898082b0723b02d5',
            '7ec967f0e37f14998082b0787b0721', '7f07e7f0e47f531b0723b0b6fb0722', '7f0e37f1487f531b0b0bb0b6fb0722',
            '7f0e37f0e37f14898082b0723b02d5', '7ec967f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721',
            '7f0e37f1487f531b0b0bb0b6fb0722', '7f0e37f0e37f14898082b072297c35', '7ec967f0e37f14998082b0787b06bd',
            '7f07e7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e37f0e37f14898082b072297c35',
            '7ec967f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722',
            '7f0e37f0e366aa89801eb072297c35', '7ec967f0e37f14998082b0787b06bd', '7f07e7f0e47f149b0723b0787b0721',
            '7f0e27f1487f531b0b0bb0b6fb0722', '7f0e37f0e366aa89801eb072297c35', '7ec967f0e37f14998082b0723b06bd',
            '7f07e7f0e47f149b0723b0787b0721', '7f0e27f0e47f531b0723b0b6fb0722', '7f0e37f0e366aa89801eb072297c35',
            '7ec967f0e37f14998082b0723b06bd', '7f07e7f0e37f14998083b0787b0721', '7f0e27f0e47f531b0723b0b6fb0722',
            '7f0e37f0e366aa89801eb072297c35', '7ec967f0e37f14898082b0723b02d5', '7f07e7f0e37f14998082b0787b0721',
            '7f07e7f0e47f531b0723b0b6fb0722', '7f0e36665b66aa89801e9808297c35', '665f67f0e37f14898082b0723b02d5',
            '7ec967f0e37f14998082b0787b0721', '7f07e7f0e47f531b0723b0b6fb0722', '7f0e36665b66a449801e9808297c35',
            '665f67f0e37f14898082b0723b02d5', '7ec967f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721',
            '7f0e36665b66a449801e9808297c35', '665f67f0e37f14898082b072297c35', '7ec967f0e37f14998082b0787b06bd',
            '7f07e7f0e47f531b0723b0b6fb0721', '7f0e26665b66a449801e9808297c35', '665f67f0e37f1489801eb072297c35',
            '7ec967f0e37f14998082b0787b06bd', '7f07e7f0e47f531b0723b0b6fb0721', '7f0e27f1487f531b0b0bb0b6fb0722',
        );
    }
    return sTermInfo;
}

/**
 * 数字转中文速查表
 * ['日','一','二','三','四','五','六','七','八','九','十']
 */
const nStr1 = [
    "\u65e5", "\u4e00", "\u4e8c", "\u4e09",
    "\u56db", "\u4e94", "\u516d", "\u4e03",
    "\u516b", "\u4e5d", "\u5341",
];

/**
 * 日期转农历称呼速查表
 * ['初','十','廿','卅']
 */
const nStr2 = [
    "\u521d", "\u5341", "\u5eff", "\u5345",
];

/**
 * 月份转农历称呼速查表
 * ['正','一','二','三','四','五','六','七','八','九','十','冬','腊']
 */
const nStr3 = [
    "\u6b63", "\u4e8c", "\u4e09", "\u56db",
    "\u4e94", "\u516d", "\u4e03", "\u516b",
    "\u4e5d", "\u5341", "\u51ac", "\u814a",
];

const astroName = "\u9b54\u7faf\u6c34\u74f6\u53cc\u9c7c\u767d\u7f8a\u91d1\u725b\u53cc\u5b50\u5de8\u87f9\u72ee\u5b50\u5904\u5973\u5929\u79e4\u5929\u874e\u5c04\u624b\u9b54\u7faf";
const astroSomeArray = [20, 19, 21, 21, 21, 22, 23, 23, 23, 23, 22, 22];

export default class Calendar {
    /**
     * 返回农历y年一整年的总天数
     */
    static lYearDays(year) {
        let sum = 348;
        const lunar = getLunarInfo();
        for (let i = 0x8000; i > 0x8; i >>= 1) {
            sum += (lunar[year - 1900] & i) ? 1 : 0;
        }
        return (sum + this.leapDays(year));
    }

    /**
     * 返回农历y年闰月是哪个月；若y年没有闰月 则返回0 (0-12)
     */
    static leapMonth(y) {
        //闰字编码 \u95f0
        const lunar = getLunarInfo();
        return (lunar[y - 1900] & 0xf);
    }

    /**
     * 返回农历y年闰月的天数 若该年没有闰月则返回0 (0、29、30)
     */
    static leapDays(y) {
        if (this.leapMonth(y)) {
            const lunar = getLunarInfo();
            return ((lunar[y - 1900] & 0x10000) ? 30 : 29);
        }
        return 0;
    }

    /**
     * 返回农历y年m月（非闰月）的总天数，计算m为闰月时的天数请使用leapDays方法 (-1、29、30)
     */
    static monthDays(y, m) {
        if (m > 12 || m < 1) {
            //月份参数从1至12，参数错误返回-1
            return -1;
        }
        const lunar = getLunarInfo();
        return ((lunar[y - 1900] & (0x10000 >> m)) ? 30 : 29);
    }

    /**
     * 返回公历(!)y年m月的天数 (-1、28、29、30、31)
     */
    static solarDays(y, m) {
        if (m > 12 || m < 1) {
            //若参数错误 返回-1
            return -1;
        }
        if (2 !== m) {
            return (solarMonth[m - 1]);
        } else {
            //2月份的闰平规律测算后确认返回28或29
            return (((y % 4 === 0) && (y % 100 !== 0) || (y % 400 === 0)) ? 29 : 28);
        }
    }

    /**
     * 农历年份转换为干支纪年
     */
    static toGanZhiYear(lYear) {
        let ganKey = (lYear - 3) % 10;
        let zhiKey = (lYear - 3) % 12;
        if (ganKey === 0) {
            //如果余数为0则为最后一个天干
            ganKey = 10;
        }
        if (zhiKey === 0) {
            //如果余数为0则为最后一个地支
            zhiKey = 12;
        }
        return Gan[ganKey - 1] + Zhi[zhiKey - 1];
    }

    /**
     * 公历月、日判断所属星座
     */
    static toAstro(solarMonth, solarDay) {
        return astroName.substr(
                solarMonth * 2 - (solarDay < astroSomeArray[solarMonth - 1] ? 2 : 0),
                2,
            ) +
            "\u5ea7";//座
    }

    /**
     * 传入offset偏移量(相对甲子的偏移量)返回干支
     */
    static toGanZhi(offset) {
        return Gan[offset % 10] + Zhi[offset % 12];
    }

    /**
     * 传入公历(!)y年获得该年第n个节气的公历日期。y公历年(1900-2100)；n二十四节气中的第几个节气(1~24)；从n=1(小寒)算起
     */
    static getTerm(y, n) {
        if (y < 1900 || y > 2100) {
            return -1;
        }
        if (n < 1 || n > 24) {
            return -1;
        }
        const sTerm = getSTermInfo();
        const _table = sTerm[y - 1900];
        const _info = [
            parseInt('0x' + _table.substr(0, 5)).toString(),
            parseInt('0x' + _table.substr(5, 5)).toString(),
            parseInt('0x' + _table.substr(10, 5)).toString(),
            parseInt('0x' + _table.substr(15, 5)).toString(),
            parseInt('0x' + _table.substr(20, 5)).toString(),
            parseInt('0x' + _table.substr(25, 5)).toString()
        ];
        const _calday = [
            _info[0].substr(0, 1),
            _info[0].substr(1, 2),
            _info[0].substr(3, 1),
            _info[0].substr(4, 2),

            _info[1].substr(0, 1),
            _info[1].substr(1, 2),
            _info[1].substr(3, 1),
            _info[1].substr(4, 2),

            _info[2].substr(0, 1),
            _info[2].substr(1, 2),
            _info[2].substr(3, 1),
            _info[2].substr(4, 2),

            _info[3].substr(0, 1),
            _info[3].substr(1, 2),
            _info[3].substr(3, 1),
            _info[3].substr(4, 2),

            _info[4].substr(0, 1),
            _info[4].substr(1, 2),
            _info[4].substr(3, 1),
            _info[4].substr(4, 2),

            _info[5].substr(0, 1),
            _info[5].substr(1, 2),
            _info[5].substr(3, 1),
            _info[5].substr(4, 2),
        ];
        return parseInt(_calday[n - 1]);
    }

    /**
     * 传入农历数字月份返回汉语通俗表示法
     */
    static toChinaMonth(m) {
        // 月 => \u6708
        if (m > 12 || m < 1) {
            //若参数错误 返回-1
            return -1;
        }
        return nStr3[m - 1] + "\u6708";//加上月字
    }

    /**
     * 传入农历日期数字返回汉字表示法
     */
    static toChinaDay(d) {
        //日 => \u65e5
        switch (d) {
            case 10:
                return '\u521d\u5341';
            case 20:
                return '\u4e8c\u5341';
            case 30:
                return '\u4e09\u5341';
            default :
                return nStr2[~~(d / 10)] + nStr1[d % 10];
        }
    }

    /**
     * 年份转生肖[!仅能大致转换] => 精确划分生肖分界线是“立春”
     */
    static getAnimal(y) {
        return Animals[(y - 4) % 12];
    }

    /**
     * 传入阳历年月日获得详细的公历、农历信息
     */
    static solar2lunar(y, m, d) {
        //参数区间1900.1.31~2100.12.31
        //年份限定、上限
        if (y < 1900 || y > 2100) {
            return -1;// undefined转换为数字变为NaN
        }
        //公历传参最下限
        if (y === 1900 && m === 1 && d < 31) {
            return -1;
        }
        //未传参  获得当天
        const objDate = !y ? (new Date()) : (new Date(y, m - 1, d));

        let i;
        let leap;
        let temp = 0;

        //修正ymd参数
        y = objDate.getFullYear();
        m = objDate.getMonth() + 1;
        d = objDate.getDate();

        let offset = (
            Date.UTC(objDate.getFullYear(), objDate.getMonth(), objDate.getDate()) -
            Date.UTC(1900, 0, 31)
        ) / 86400000;
        for (i = 1900; i < 2101 && offset > 0; i++) {
            temp = this.lYearDays(i);
            offset -= temp;
        }
        if (offset < 0) {
            offset += temp;
            i--;
        }

        //是否今天
        const isTodayObj = new Date();
        const isToday = isTodayObj.getFullYear() === y &&
            isTodayObj.getMonth() + 1 === m &&
            isTodayObj.getDate() === d;
        //星期几
        let nWeek = objDate.getDay();
        const cWeek = nStr1[nWeek];
        //数字表示周几顺应天朝周一开始的惯例
        if (nWeek === 0) {
            nWeek = 7;
        }
        //农历年
        const year = i;
        leap = this.leapMonth(i); //闰哪个月
        let isLeap = false;

        //效验闰月
        for (i = 1; i < 13 && offset > 0; i++) {
            //闰月
            if (leap > 0 && i === (leap + 1) && !isLeap) {
                --i;
                isLeap = true;
                temp = this.leapDays(year); //计算农历闰月天数
            } else {
                temp = this.monthDays(year, i);//计算农历普通月天数
            }
            //解除闰月
            if (isLeap && i === (leap + 1)) {
                isLeap = false;
            }
            offset -= temp;
        }
        // 闰月导致数组下标重叠取反
        if (offset === 0 && leap > 0 && i === leap + 1) {
            if (isLeap) {
                isLeap = false;
            } else {
                isLeap = true;
                --i;
            }
        }
        if (offset < 0) {
            offset += temp;
            --i;
        }
        //农历月
        const month = i;
        //农历日
        const day = offset + 1;
        //天干地支处理
        const sm = m - 1;
        const gzY = this.toGanZhiYear(year);

        // 当月的两个节气
        // bugfix-2017-7-24 11:03:38 use lunar Year Param `y` Not `year`
        const firstNode = this.getTerm(y, (m * 2 - 1));//返回当月「节」为几日开始
        const secondNode = this.getTerm(y, (m * 2));//返回当月「节」为几日开始

        // 依据12节气修正干支月
        let gzM = this.toGanZhi((y - 1900) * 12 + m + 11);
        if (d >= firstNode) {
            gzM = this.toGanZhi((y - 1900) * 12 + m + 12);
        }

        //传入的日期的节气与否
        let isTerm = false;
        let Term = null;
        const solarTerm = getSolarTerm();
        if (firstNode === d) {
            isTerm = true;
            Term = solarTerm[m * 2 - 2];
        }
        if (secondNode === d) {
            isTerm = true;
            Term = solarTerm[m * 2 - 1];
        }
        //日柱 当月一日与 1900/1/1 相差天数
        const dayCyclical = Date.UTC(y, sm, 1, 0, 0, 0, 0) / 86400000 + 25567 + 10;
        const gzD = this.toGanZhi(dayCyclical + d - 1);
        //该日期所属的星座
        const astro = this.toAstro(m, d);

        return {
            'lYear': year,
            'lMonth': month,
            'lDay': day,
            'Animal': this.getAnimal(year),
            'IMonthCn': (isLeap ? "\u95f0" : '') + this.toChinaMonth(month),
            'IDayCn': this.toChinaDay(day),
            'cYear': y,
            'cMonth': m,
            'cDay': d,
            'gzYear': gzY,
            'gzMonth': gzM,
            'gzDay': gzD,
            'isToday': isToday,
            'isLeap': isLeap,
            'nWeek': nWeek,
            'ncWeek': "\u661f\u671f" + cWeek,
            'isTerm': isTerm,
            'Term': Term,
            'astro': astro
        };
    }

    /**
     * 传入农历年月日以及传入的月份是否闰月获得详细的公历、农历信息
     * 参数区间1900.1.31~2100.12.1
     */
    static lunar2solar(y, m, d, isLeapMonth) {
        isLeapMonth = !!isLeapMonth;

        if (isLeapMonth && (this.leapMonth(y) !== m)) {
            //传参要求计算该闰月公历 但该年得出的闰月与传参的月份并不同
            return -1;
        }

        if (y === 2100 && m === 12 && d > 1 || y === 1900 && m === 1 && d < 31) {
            //超出了最大极限值
            return -1;
        }

        const day = this.monthDays(y, m);

        //bugFix 2016-9-25
        //if month is leap, _day use leapDays method
        let _day = day;
        if (isLeapMonth) {
            _day = this.leapDays(y);
        }
        if (y < 1900 || y > 2100 || d > _day) {
            //参数合法性效验
            return -1;
        }

        //计算农历的时间差
        let offset = 0;
        for (let i = 1900; i < y; i++) {
            offset += this.lYearDays(i);
        }
        let leap = 0, isAdd = false;
        for (let i = 1; i < m; i++) {
            leap = this.leapMonth(y);
            if (!isAdd) {//处理闰月
                if (leap <= i && leap > 0) {
                    offset += this.leapDays(y);
                    isAdd = true;
                }
            }
            offset += this.monthDays(y, i);
        }
        //转换闰月农历 需补充该年闰月的前一个月的时差
        if (isLeapMonth) {
            offset += day;
        }
        //1900年农历正月一日的公历时间为1900年1月30日0时0分0秒(该时间也是本农历的最开始起始点)
        const stamp = Date.UTC(1900, 1, 30, 0, 0, 0);
        const calObj = new Date((offset + d - 31) * 86400000 + stamp);
        const cY = calObj.getUTCFullYear();
        const cM = calObj.getUTCMonth() + 1;
        const cD = calObj.getUTCDate();

        return this.solar2lunar(cY, cM, cD);
    }

}
